What you will : There are 6 pieces of flexible drill extensions in the set, which are sufficient in number and different in size, and can your daily use and replacement needs; They control and precision when drilling and drivingChrome vanadium steel material: the extension part of the impact driver is made of high- chrome vanadium steel, which is stable and and can withstand pressure; Fine technology and surface coating can prevent damage to parts and materials that may contact the drill holder during useEasy to eject automatically: the rod sleeve chuck adapter of the drill bit expander is easy to eject the bit automatically to release in a short time, which can safely fix the drill bit in place and that the drill bit will not shake when in useApplicable size: The magnetic bit base is about 2.36-5.91 inches/60-150 mm, which can your various needs. It has a 1/4 inch driver adapter and a 1/4 inch hexagonal handle, suitable for daily useWide range of applications: suitable for conversion of nuts, drill , pneumatic screwdrivers, electric screwdrivers, pneumatic drills, manual screwdrivers and screwdriver heads; They are also perfect for DIY work, home maintenance and general maintenance; Please note that only the bottom of the hole has magnetism, and the hexagonal handle has no magnetismcolor:BlueMaterial:MetalPackage Contents:6 x bit holder(60/100/150mm)Only the above package content, other are not included.Note: Light reflection and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.